<?php defined('SYSPATH') OR die('No direct access allowed.');
/**
 * Trident Payment Driver
 *
 * $Id: Trident.php 3769 2008-12-15 00:48:56Z zombor $
 *
 * @package    Payment
 * @author     Kohana Team
 * @copyright  (c) 2007-2008 Kohana Team
 * @license    http://kohanaphp.com/license.html
 */
class Payment_Trident_Driver implements Payment_Driver
{
	// Fields required to do a transaction
	private $required_fields = array
	(
		'profile_id'         => FALSE,
		'profile_key'        => FALSE,
		'card_number'        => FALSE,
		'card_exp_date'      => FALSE,
		'transaction_amount' => FALSE,
		'transaction_type'   => FALSE
	);

	private $fields = array
	(
		'profile_id'         => '',
		'profile_key'        => '',
		'card_number'        => '',
		'card_exp_date'      => '',
		'transaction_amount' => '',
		'transaction_type'   => ''
		);

		private $test_mode = TRUE;

		/**
		 * Sets the config for the class.
		 *
		 * @param  array  config passed from the library
		 */
		public function __construct($config)
		{
			$this->fields['profile_id'] = $config['profile_id'];
			$this->fields['profile_key'] = $config['profile_key'];
			$this->fields['transaction_type'] = $config['transaction_type'];
			$this->required_fields['profile_id'] = !empty($config['profile_id']);
			$this->required_fields['profile_key'] = !empty($config['profile_key']);
			$this->required_fields['transaction_type'] = !empty($config['transaction_type']);

			$this->curl_config = $config['curl_config'];
			$this->test_mode = $config['test_mode'];

			Kohana::log('debug', 'Trident Payment Driver Initialized');
		}

		public function set_fields($fields)
		{
			foreach ((array) $fields as $key => $value)
			{
				// Do variable translation
				switch ($key)
				{
					case 'card_num':
						$key = 'card_number';
						break;
					case 'exp_date':
						$key = 'card_exp_date';
						break;
					case 'amount':
						$key = 'transaction_amount';
						break;
					case 'tax':
						$key = 'tax_amount';
						break;
					case 'cvv':
						$key = 'cvv2';
						break;
					default:
						break;
				}

				$this->fields[$key] = $value;
				if (array_key_exists($key, $this->required_fields) and !empty($value)) $this->required_fields[$key] = TRUE;
			}
		}

		public function process()
		{
			// Check for required fields
			if (in_array(FALSE, $this->required_fields))
			{
				$fields = array();
				foreach ($this->required_fields as $key => $field)
				{
					if (!$field) $fields[] = $key;
				}
				throw new Kohana_Exception('payment.required', implode(', ', $fields));
			}

			$fields = '';
			foreach ( $this->fields as $key => $value )
			{
				$fields .= $key.'='.urlencode($value).'&';
			}

			$post_url = ($this->test_mode)
			? 'https://test.merchante-solutions.com/mes-api/tridentApi' // Test mode URL
			: 'https://api.merchante-solutions.com/mes-api/tridentApi'; // Live URL

			$ch = curl_init($post_url);

			// Set custom curl options
			curl_setopt_array($ch, $this->curl_config);

			// Set the curl POST fields
			curl_setopt($ch, CURLOPT_POSTFIELDS, rtrim( $fields, "& " ));

			// Execute post and get results
			$response = curl_exec($ch);
			curl_close ($ch);
			if (!$response)
			throw new Kohana_Exception('payment.gateway_connection_error');

			$response = explode('&', $response);
			foreach ($response as $code)
			{
				$temp = explode('=', $code);
				$response[$temp[0]] = $temp[1];
			}

			return ($response['error_code'] == '000') ? TRUE : Kohana::lang('payment.error', Kohana::lang('payment_Trident.'.$response['error_code']));
		}
} // End Payment_Trident_Driver Class